Markov Decision Processes jobs

Senior Principal Data Scientist

Grab · Posted Nov 10, 2026

Open

Singapore, Singapore
On-site
Full-time · Senior
10+ years

Senior Principal Data Scientist

Grab · Posted Nov 10, 2026

Open

Singapore, Singapore
On-site
Full-time · Senior
10+ years

Senior Machine Learning Engineer (Fulfilment)

Grab · Posted Nov 10, 2026

Open

Singapore, Singapore
Senior
10+ years

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Lead the design and implementation of reinforcement learning and large language model systems for Grab's marketplace optimization, serving as a technical lead for a small team and reporting to the Head of Data Science.

Responsibilities

Design and implement end-to-end RL systems that combine model-based RL, offline RL, simulation, and online learning into a unified training pipeline.
Build latent world models and marketplace state representations that capture supply-demand interactions, location-based patterns, and behavioural signals from users and drivers.
Develop systems that optimize across multiple marketplace levers simultaneously—pricing, dispatching, and supply repositioning.
Create policy evaluation frameworks and establish monitoring systems that allow safe deployment of new decision-making policies in production.
Fine-tune open-source large language models on domain-specific data to build capabilities for prediction, reasoning, and simulation within marketplace applications.

Requirements

PhD in Computer Science, Operations Research, Applied Mathematics, or related field

Skills

Reinforcement Learning fundamentals Markov Decision Processes stochastic control

Senior Principal Machine Learning Engineer (Fulfilment)

Grab · Posted Nov 10, 2026

Open

Beijing, China
On-site
Full-time · Principal
10+ years

Apply with RefersoAI Apply on careers page

Lead architect and technical lead for autonomous marketplace decisioning systems, guiding research-to-production ML/RL pipelines and generative AI tools.

Responsibilities

Architect and implement end-to-end reinforcement learning pipelines for pricing, dispatch, and supply repositioning
Design latent world models and spatio-temporal marketplace state representations
Establish off-policy evaluation frameworks and safety guardrails
Build behavioural simulation systems using fine-tuned LLMs
Partner with backend, streaming, and platform engineering teams to deploy low-latency decision agents

Requirements

PhD in Computer Science, Operations Research, Applied Mathematics, or related quantitative discipline
Master’s degree with 12+ years of equivalent experience

Skills

reinforcement learning Markov Decision Processes offline RL reward shaping large language model adaptation

Senior Principal Data Scientist

Senior Principal Data Scientist

Responsibilities

Requirements

Skills

Benefits

Senior Machine Learning Engineer (Fulfilment)

Responsibilities

Requirements

Skills

Senior Principal Machine Learning Engineer (Fulfilment)

Responsibilities

Requirements

Skills

Benefits

Benefits